Publications by authors named "Toshifumi Yamashiro"

Background: The effectiveness of negative-pressure wound therapy (NPWT) in skin graft fixation has been demonstrated in several clinical studies. However, in vitro and in vivo studies on skin graft fixation with NPWT have been scarce. In this in vivo study, we aimed to determine whether NPWT fixation enhances skin graft survival and how it contributes to improving skin graft survival biologically.

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Tissue expansion is a handy reconstructive technique for the head and neck region; however, its implementation requires careful planning and surgical experience. If tissue expansion is inadequate, forced closure results in wound tension and risks complications, such as postoperative deformity, wide scarring, and wound dehiscence. We report a case of adult forehead melanocytic nevus excision using a tissue expander (TE) where complications caused by insufficient tissue expansion were avoided by creating a flap using a dog ear.

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Traumatic aneurysms occurring in the digit are extremely rare. We report a case of a traumatic pseudoaneurysm arising from a terminal branch of the finger artery and presenting as a mixed lesion with pyogenic granuloma that was exposed to the outside of the body and treated surgically.

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Article Synopsis
  • Negative-pressure wound therapy (NPWT) is a method that enhances wound healing by creating a vacuum over the wound area, which has been used for 25 years in various medical situations.
  • Although NPWT has shown promise, there is a lack of molecular biological evidence due to delays in research, highlighting the need for more in-depth studies.
  • The focus of research is shifting from just understanding NPWT's main actions to examining its broader effects on different cells, bacteria, and surgical wounds, aiming to strengthen the scientific foundation for its clinical applications.
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Background: Although the clinical efficacy of negative-pressure wound therapy (NPWT) is well known, many of its molecular biological mechanisms remain unresolved, mainly due to the difficulty and paucity of relevant in vitro studies. We attempted to develop an in vitro cell culture system capable of real-time monitoring of cells during NPWT treatment.

Materials And Methods: A novel negative-pressure cell culture system was developed by combining an inverted microscope, a stage-top incubator, a sealed metal chamber for cell culture, and an NPWT treatment device.

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